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Cache and Interconnect Architectures in Multiprocessors by Patricia J. Teller (auth.), Michel Dubois, Shreekant S.

By Patricia J. Teller (auth.), Michel Dubois, Shreekant S. Thakkar (eds.)

Cache And Interconnect Architectures In Multiprocessors Eilat, Israel may well 25-261989 Michel Dubois UniversityofSouthernCalifornia Shreekant S. Thakkar SequentComputerSystems the purpose of the workshop was once to collect researchers engaged on cache coherence protocols for shared-memory multiprocessors with a number of interconnect architectures. Shared-memory multiprocessors became plausible platforms for plenty of functions. Bus­ dependent shared-memory structures (Eg. Sequent's Symmetry, Encore's Multimax) are at the moment restricted to 32 processors. the 1st objective of the workshop used to be to benefit concerning the functionality ofapplications on present cache-based structures. the second one objective was once to profit approximately new community architectures and protocols for destiny scalable platforms. those protocols and interconnects could permit shared-memory architectures to scale past present imitations. The workshop had 20 audio system who observed their present examine. The discussions have been vigorous and cordial adequate to maintain the members clear of the fantastic sand and solar for 2 days. The contributors received to understand one another good and have been in a position to proportion their options in a casual demeanour. The workshop was once equipped into a number of periods. The precis of every consultation is defined less than. This e-book offers revisions of a few of the papers provided on the workshop.

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Thus, it is not possible to snoop on the virtual addresses. Before accessing the bus the processor must translate virtual addresses in the TLB. 2 Virtual-To-Physical Directory Binding In the usual operating mode, the cache is accessed by the processor with virtual addresses while the dual directory is accessed from the bus with physical addresses. However, some accesses to the dual directory must also reach the cache, and vice versa. Therefore, a binding must be defined between the entries in the cache directory and in the dual directory pointing to the same cache block.

Roy. The cache architecture of the Apollo DN4000. Proc. 1988 Compcon, IEEE, pages 300-302, 1988. 5 Borivoje Furht and Veljko Milutinovic. A survey of microprocessor architectures for memory management. , 1987. 6 James R. Goodman. Coherency for multiprocessor virtual address caches. Proc. 2nd International Conference on Architecture Support 35 For Programming Languages and Operating Systems, ACM, 1987. 7 David A. Patterson. Reduced instruction set computer. Communications of the ACM. , 1985. 8 Alan J.

Many variations are possible and the level of sophistication of the hardware support must be driven exclusively by the frequency of demapping and remapping operations in the system. This frequency depends on the organization of the kernel and the virtual addressing scheme. More performance studies are needed to clarify these design tradeoffs. 5 Support For Memory Management Although each process has its own page tables for virtual-to-physical address translation, there are many cases where a page table entry (noted PTE) can be shared by different processors.

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